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[VTOL] 一种可折叠机翼变成四轴飞行器的垂起构型 | Un-Folding a Quadcopter to Increase Efficiency
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https://www.youtube.com/watch?v=gZQEOjyjwhc 332,888 views 24 Nov 2023 #VTOLThanks to PCBWay for sponsoring this video--check out their website for an instant quote on custom PCBs, 3D printing, or even CNC machined parts: https://www.pcbway.com/?from=Nicholas If you take a large, efficient wing and fold it up into a box, you can turn it into a quadcopter. This sounds kind of silly, but I promise there’s some distinct benefits to controllability in hover, and efficiency in forward flight. Patreon: / nicholasrehm How a tailsitter transition works: • Taming the Tail-Sitter: Hover to Forw... Can wingtip-mounted motors improve efficiency?: • Can Wingtip Motors Improve Aircraft E... Peter’s mini quadrotor biplane: • Chasing the VTOL Tail-sitter Mini QBiT! Tail-sitter VTOL designs are a hilariously simple approach to the challenges of mashing an airplane and a helicopter together. Just make a flying wing take off from its tail and pitch over 90 degrees into forward flight. But to improve the efficiency of forward flight generally means to degrade the controllability in hover, since increasing the size of your wing also increases the amount of surface area that can be blown around by the wind. For tailsitters, forward flight efficiency and hover controllability have always been in direct conflict. This design is my attempt at remedying this classic tradeoff, to see just how big of a wing we can turn into a tailsitter. Folding it up allows for motors to be placed in each corner like a quadcopter, dramatically improving control authority, while reducing the wind-facing surface area in hover. If you found this video interesting and want to follow along as we inch closer into forward flight, don’t forget to subscribe! Intro: 00:00 Design Overview: 00:57 The Build: 03:25 First Flights: 05:15 Forward Flight Game Plan: 07:14 Transition Testing: 08:00 Conclusions: 09:56
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